| Acronym | Meaning |
| TOA | Thermooptical Analysis |
| OMNMHCE | Organic Material Nonmethane Hydrocarbon Equivalent |
| GIXA | Glancing-incidence X-ray Analysis |
| ICTA | International Confederation Of Thermal Analysis |
| MBT | Minimum [spark Advance For] Best Torque |
| MRO | Medium Range Order |
| PCD | Photoconductive Decay |
| LTO | Laguerre-type Orbital (an Ao) |
| LAQL | Lowest Analytically Quantifiable Level |
| LRAT | Long-range Atmospheric Transport |